Jensen Stereo USB Cassette Player With Encoding To Computer Cassette Player with,Fast Forward,Rewind,Stop and Auto Reverse Transfer Cassette Content to Computer via USB Connection(USB cable Included) Convert Music into MP3 Format with Included Software Power: 2 x AA (UM-3) Batteries (not included) or AC Adaptable(AC Adapter not included).DC5V 0.5A max. MAC users: Please Note that you are buying this product at your own risk we cannot guaranty that it will work for MAC